RWT-ER84Companion Mic - CM4

CM•4 Multi-Talker Noise Reduction System Companion Mics ® User Guide TABLE OF CONTENTS About Companion Mics .................................................................1 Benefits ..........................................................................................1 Important Privacy Notice to All Users ...........................................1 System Configurations ..................................................................2 Identification of Controls ...............................................................3 Listening Options ..........................................................................4 Operation ........................................................................................4 Interference ....................................................................................5 Operating Distance ........................................................................5 Charging .........................................................................................6 Specifications .................................................................................7 About Etymotic Research ..............................................................8 Warranty .........................................................................................8 FCC and Other Information ...........................................................9 FCC Health and Safety Information ...............................................9 Industry Canada .............................................................................9 1 ABOuT COmpANiON miCS ® The Companion Mics project began in 1992. Before it was introduced in 2006, it went through five developmental phases: 1) ultra low-power digital transmission; 2) low-cost FM systems; 3) high-cost FM systems; 4) low-power digital security-alarm systems; and 5) the 2006 version, a 2.4 GHz spread-spectrum (digital frequency hopping) system. None of the first four systems provided adequate bandwidth and/or sufficient signal-to-noise ratio.The present Companion Mics system has both. The Companion Mics system was developed to help those who have significant difficulty understanding conversation in background noise, such as encountered in restaurants and other noisy places. Our quality of life depends to a great extent on our ability to communicate with family and friends. When this ability is compromised, there is a tendency to withdraw. With the Companion Mics system, those who have been excluded from conversation in noisy places can enjoy social situations and fully participate again. The CM•4 Companion Mics system establishes a direct communication among all active units and bypasses the noise and reverberation of the local acoustic environment. The wireless technology used in the Companion Mics system is similar to that used by digital cordless phones and other wireless devices using the 2.4 GHz band. BENEFiTS The Companion Mics system enables up to four persons to listen and speak to each other. The microphones in this system give up to a ten-to-one decrease in the relative noise level that is heard by each listener, which makes it possible to carry on a normal conversation even in high levels of background noise. The units use lithium polymer rechargeable batteries. Battery life is 6-10 hours, which gives ample use time for most applications. A complete charge takes 2-3 hours. To conserve battery life, the system automatically times out and turns off after a period of inactivity. impOrTANT privACy NOTiCE TO ALL uSErS It is easy to forget that you are wearing Companion Mics. If you leave the conversation, or want to have a private conversation with someone, be sure to disconnect from the system. The operating range of this system can be 150 feet or more, so even if you are across a room or away from the conversation, others may be able to hear you! 4 SySTEm CONFiGurATiONS • 2, 3 or 4 individual CM4 units • 1-4 pairs of ER-6i earphones as specified by purchaser • 1-4 Neckloop(s) as specified by purchaser • AC adapter • 4-unit charging cable • Carrying Case • User Guide Carrying case CM4 AC adapterNeckloop 2 Charging cable Shown with units attached ER-6i high-fidelity Noise-isolating Earphones 5 idENTiFiCATiON OF CONTrOLS Shirt Clip ON and Volume Up OFF and Volume Down Earphone/Neckloop Jack 3 LiSTENiNG OpTiONS • ER-6i noise-isolating earphones • Neckloop with hearing aid or cochlear implant on t-coil mode • Direct audio input (DAI) on hearing aids and cochlear implants OpErATiON • Each unit has two buttons: ON/Volume Up and OFF/Volume Down • Each unit has two LEDs ° Green: ON (off when unit is off) ° Amber: Charging (off when unit is fully charged) • Units are charged through the earphone jacks Pairing Pairing is done at factory and is not required by the user. If additional units are purchased, the system must be returned to Etymotic Research to be paired. The units turn on independently, but the Master Unit (Unit 0) must be on at all times when the system is in use. Once a unit forms an RF connection to at least one other unit, both units will show a solid green light indicating that the system is functional. Controls • To turn ON: Press and hold “+” key for at least 2 seconds • To turn OFF: Press and hold “-” key for at least 2 seconds • VOLUME UP: Press the “+” key • VOLUME DOWN: Press “-” key Smart Microphones Each unit has a position-sensitive directional microphone. Users should clip the CM unit on clothing as close to the head as possible, with the longer side pointing toward the mouth. An internal sensor automatically selects the appropriate microphones for best noise rejection. Neckloop 4 Disconnecting and Reconnecting • Any unit (except the Master Unit) can be disconnected from the system and reconnected by simply pressing the ON and OFF buttons. When the green LED is off, the unit is off. • If the LED is blinking green, check the Master Unit. It needs to be on during use. • If any unit will not turn on, i…

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1 Etymotic Research, Inc. 61 Martin Lane Elk Grove Village, IL 60007 USA June 2, 2015 Subject: Hoping Set Limitations FCC ID RWT-ER84 To Whom It May Concern: We certify that hopping set for the Companion Mic product: Companion Mic - CM4 (FCC ID RWT-ER84) is restricted to those channels with a center frequency between 2404 and 2480. This limitation is to provide adequate frequency separation from the band edge, for compliance with the relevant out-of-band limits. Sincerely, President, Etymotic Research

Product Photos FCC ID: RWT-ER84 Companion Microphone Model Number ER84 Etymotic Research 61 Martin Ln. Elk Grove Village, IL 60007 By TEM Consulting, LP 140 River Rd. Georgetown, TX 78628 June 2015 Companion Microphone Companion Microphone

MODEL: CM4 IC: 6648A-ER84 FCC ID: RWT-ER84 www.etymotic.com

Label Location (Back side of the unit, under the clip

Product Photos FCC ID: RWT-ER84 Companion Microphone Model Number ER84 Etymotic Research 61 Martin Ln. Elk Grove Village, IL 60007 By TEM Consulting, LP 140 River Rd. Georgetown, TX 78628 May 2015 Product Companion Microphone Companion Microphone - Internal Photos Companion Microphone - Internal Photos

WLL Report #13970-02 Rev 1 - Page i- © 2015 Washington Laboratories, Ltd. September 1, 2015 WLL Report #13970-02 Rev 1 Etymotic Research 61 Martin Lane Elk Grove Village, IL 60007 Model: Etymotic Research’s Companion Mic Product FCC ID: RWT-ER84, IC ID: 6648A-ER84 Washington Laboratories, Ltd. performed a SAR Evaluation on the on Etymotic Research’s Companion Mic Product. This product is a portable transmitter, operating between 2404MHz and 2480MHz. It is designed to be worn by the user with a seperation distance ≤ 5mm and therefore SAR must be considered. FCC Exclusion Results: The EUT was tested under FCC Part 15.247 as a DTS device and the maximum measured power was determined as 2.04mW(3.1dBm) conducted at antenna port with a 0dBi chip antenna. The manufacture allows for a maximum power of 2.5mW due to manufacting variance. Documentation of the measurement technique used can be found in Washington Laboratory Report 13970-01. Refering to the FCC Documument, 447498 D01 General RF Exposure Guidance v05r01, Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies, section 4.1 allows for the exclusion of SAR Testing if the device meets the following requirements: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR Where, • f (GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • When the minimum test separation distance is < 5 mm, a distance of 5 mm is used Using the above formula and test data for the highest power channel: (3 ÷ 5) X √2.404 ) = 0.930 < ≤ 3.0 (3 ÷ 5) X √2.440 ) = 0.937 < ≤ 3.0 (3 ÷ 5) X √2.480 ) = 0.945< ≤ 3.0 WLL Report #13250-02 Rev 1 - Page ii- © 2015 Washington Laboratories, Ltd. IC Exclusion Results from RSS102 issue 5 Exemption Limits for Routine Evaluation – SAR Evaluation SAR evaluation is required if the separation distance between the user and/or bystander and the antenna and/or radiating element of the device is less than or equal to 20 cm, except when the device operates at or below the applicable output power level (adjusted for tune-up tolerance) for the specified separation distance defined in Table 1. If the frequency falls between two levels a linear interpolation shall be used: For the EUT frequencies in question the Limits are as follows: Frequency Limit EUT Levels 2.404GHz 4.2mW 2.5mW 2.440GHZ 4.0mW 2.5mW 2.480GHz 3.9mW 2.5mW The EUT fulfills the exclusion requirements for both FCC and Industry Canada. Therefore, the EUT does not require SAR Testing. WLL Report #13250-02 Rev 1 - Page iii- © 2015 Washington Laboratories, Ltd. Testing was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. Site description and site attenuation data have been placed on file with the FCC's Sampling and Measurements Branch at the FCC laboratory in Columbia, MD. Washington Laboratories, Ltd. has been accepted by the FCC and approved by ACLASS under Certificate AT-1448 as an independent FCC test laboratory. These tests are accredited and meet the requirements of ISO/IEC 17025 as verified by the ANSI-ASQ National Accreditation Board/ACLASS. Refer to certificate and scope of accreditation AT-1448. Should you have any questions, please do not hesitate to contact us. Sincerely, James Ritter Steven D. Koster Compliance Engineer Vice President

Certificates and reports shall not be reproduced except in full, without the written permission of Washington Laboratories, Limited. FCC Certification Test Report For the Etymotic Research Companion Mic Product FCC ID: RWT-ER84 WLL JOB# 13970-01 Rev 1 May 30, 2015 Revised September 2, 2015 Prepared for: Etymotic Research 61 Martin Lane Elk Grove Village, IL 60007 Prepared By: Washington Laboratories, Ltd. 7560 Lindbergh Drive Gaithersburg, Maryland 20879 Testing Certificate AT-1448 Etymotic Research Companion Mic Product FCC Certification Test Report May, 2015 WLL Report #13970-01 Rev 1 - i - © 2015 Washington Laboratories, Ltd. FCC Certification Test Report for the Etymotic Research Companion Mic Product FCC ID: RWT-ER84 May 30, 2015 Revised September 2, 2015 WLL JOB# 13970-01 Rev 1 Prepared by: ___________________________ James Ritter EMC Compliance Engineer Reviewed by: ____________________________ Steven D. Koster Vice President Etymotic Research Companion Mic Product FCC Certification Test Report May, 2015 WLL Report #13970-01 Rev 1 - ii - © 2015 Washington Laboratories, Ltd. Abstract This report has been prepared on behalf of Etymotic Research to support the attached Application for Equipment Authorization. The test report and application are submitted for a Digital Transmission System (DTS) Transmitter under Part 15.247 (10/2013) of the FCC Rules. This Certification Test Report documents the test configuration and test results for the Etymotic Research Companion Mic Product. Testing was performed on an Open Area Test Site (OATS) of Washington Laboratories, Ltd, 7560 Lindbergh Drive, Gaithersburg, MD 20879. Site description and site attenuation data have been placed on file with the FCC's Sampling and Measurements Branch at the FCC laboratory in Columbia, MD. The Industry OATS numbers are 3035A-1 and 3035A-2 for Washington Laboratories, Ltd. Site 1 and Site 2, respectively. Washington Laboratories, Ltd. has been accepted by the FCC and approved by ACLASS under Certificate AT-1448 as an independent FCC test laboratory. The Etymotic Research Companion Mic Product complies with the limits for a Digital Transmission System (DTS) Transmitter device under FCC Part 15.247. Revision History Description of Change Date Rev 0 Initial Release May 30, 2015 Rev 1 Corrected power levels in Table 8 September 2, 2015 Etymotic Research Companion Mic Product FCC Certification Test Report May, 2015 WLL Report #13970-01 Rev 1 - iii - © 2015 Washington Laboratories, Ltd. Table of Contents Abstract ........................................................................................................................................... ii 1 Introduction ..........................................................................................................................1 1.1 Compliance Statement .................................................................................................... 1 1.2 Test Scope ....................................................................................................................... 1 1.3 Contract Information ....................................................................................................... 1 1.4 Test Dates........................................................................................................................ 1 1.5 Test and Support Personnel ............................................................................................ 1 1.6 Abbreviations .................................................................................................................. 2 2 Equipment Under Test .........................................................................................................3 2.1 EUT Identification & Description .................................................................................. 3 2.2 Test Configuration .......................................................................................................... 3 2.3 Testing Algorithm ........................................................................................................... 3 2.4 Test Location .................................................................................................................. 3 2.5 Measurements ................................................................................................................. 4 2.5.1 References ................................................................................................................... 4 2.6 Measurement Uncertainty ............................................................................................... 4 3 Test Equipment ....................................................................................................................6 4 Test Summary ......................................................................................................................7 5 Test Results ..........................................................................................................................8 5.1 Occupied Bandwidth:...................................................................................................... 8 5.2 RF Power Output: ......................................................................................................... 12 5.3 Power Spectral Density ................................................................................................. 16 5.4 Conducted Spurious Emissions at Antenna Terminals ................................................. 20 5.4.1 Band Edge Compliance............................................................................................. 49 5.5 Radiated Spurious Emissions:....................................................................................... 51 5.5.1 Test Procedure .......................................................................................................... 51 5.5.2 Duty Cycle Correction .............................................…

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